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Abstract:
Collimated sprays of hadrons, called jets, are an emergent phenomenon of quantum chromodynamics (QCD) at collider experiments, whose detailed internal structure encodes valuable information about the interactions of high energy quarks and gluons and their confinement into color-neutral hadrons. I will show that the inner structure of jet energy flow exhibits a 2D conformal symmetry, albeit QCD is not a conformal theory. The origin of the conformal symmetry is the conventional 4D Lorentz symmetry, realized on the 2-sphere at infinity. I will show how conformal field theory techniques can be used to organize energy flow observables in a systematic way, using three-point energy correlation as an example. Our results build a bridge between QCD jet substructure and 2D conformal field theory.
Biography：
HuaXing Zhu is a junior faculty member at Zhejiang University. He obtained his PhD from Peking University in 2012, after which he spent 5 years as a postdoc at SLAC and MIT. He is mainly interested in quantum field theory and its application to high energy colliders. He has published 60 papers, including 10 in Physical Review Letters. He is the recipient of 2020 Qiushi young scholar award by Qiushi Science and Technologies Foundation.
Online Meeting: https://meeting.tencent.com/dm/6jyhANCJ0NzD
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Video: https://vshare.sjtu.edu.cn/play/31cf0a2d95ec41bd65ef16fcf8e9eddb